Add view-oriented Export As/Selection and OCIO tests

Introduce view-recipe-based export paths and OCIO CPU display support. Adds Export As... and Export Selection As... UI actions/shortcuts, build/save helpers (build_view_export_rgba_image, build_window_export_rgba_image, save_window_image, save_export_selection_image), selection/image builders, and OCIO CPU processor construction. Wire up menu, actions, and default filenames; add CTest entries and regression scripts (imiv_export_selection_regression.py, imiv_save_window_regression.py, imiv_save_window_ocio_regression.py). Update docs, README and notes to document the new export flows and tests.

Signed-off-by: Vlad <shaamaan@gmail.com>

Author: ssh4net

src/doc/imiv_dev.rst

@@ -225,17 +225,30 @@ That mirror step is intentional. It keeps most existing Dear ImGui code
 procedural while establishing one durable place for future `Save View As...`
 or CPU-side export processing.
 
-The first real CPU export path is now `Save Selection As...`. It does not yet
-consume the full `ViewRecipe`; instead, it is intentionally narrower:
+The first full view-recipe CPU export path is now `Export As...`.
+
+It currently:
+
+* reconstructs an oriented RGBA image from the loaded source pixels;
+* applies the current view recipe for exposure, gamma, offset, channel/color
+  display, and OCIO display/view state;
+* writes the resulting oriented RGBA view image through OIIO.
+
+That makes `ViewRecipe` an actual preview/export seam rather than only runtime
+UI state.
+
+`Export Selection As...` is the matching cropped variant. It uses the current
+selection rectangle in source pixel space, builds a cropped source `ImageBuf`,
+then runs the same view-recipe export path on that cropped image.
+
+`Save Selection As...` remains intentionally narrower:
 
 * it reconstructs an `ImageBuf` from the loaded source pixels;
 * crops the selected ROI;
 * bakes source orientation with `ImageBufAlgo::reorient()`;
 * writes the result through OIIO.
 
-That makes it a useful end-to-end test seam for GUI-driven CPU processing
-without prematurely locking `Save View As...` to the wrong recipe-baking
-semantics.
+That keeps one export path source-oriented and one export path view-oriented.
 
 `ImageLibraryState` and `MultiViewWorkspace`
 --------------------------------------------

src/doc/imiv_tests.rst

@@ -235,6 +235,15 @@ Recent focused GUI regressions in `src/imiv/tools/` include:
 * `imiv_save_selection_regression.py`
   GUI-driven `Save Selection As...` crop export, including selected ROI and
   orientation-baked CPU output validation.
+* `imiv_export_selection_regression.py`
+  GUI-driven `Export Selection As...` export, including selection crop and
+  view-recipe baking for channel/color mode and exposure/gamma/offset.
+* `imiv_save_window_regression.py`
+  GUI-driven `Export As...` export, including view-recipe baking for
+  channel/color mode and exposure/gamma/offset.
+* `imiv_save_window_ocio_regression.py`
+  GUI-driven `Export As...` OCIO export, including view-baked display/view
+  validation against `oiiotool --ociodisplay`.
 
 
 Direct Dear ImGui Test Engine usage

src/doc/imiv_user.rst

@@ -159,12 +159,31 @@ Exporting images
 ================
 
 The current export actions are still smaller than :program:`iv`, but
-:program:`imiv` now has one real GUI-driven CPU export path:
+:program:`imiv` now has three real GUI-driven CPU export paths:
+
+* `File -> Export As...`
+  writes the current image pane as an oriented RGBA view export;
+* `Ctrl+Shift+S`
+  invokes the same action directly;
 
 * `File -> Save Selection As...`
   writes the current pixel selection to a new file;
 * `Ctrl+Alt+S`
   invokes the same action directly.
+* `File -> Export Selection As...`
+  writes the selected pixel region as an oriented RGBA view export;
+* `Ctrl+Shift+Alt+S`
+  invokes the same action directly.
+
+`Export As...` currently exports:
+
+* the current image with orientation baked to the saved output;
+* the active view recipe for exposure, gamma, offset, channel/color display,
+  and OCIO display/view if OCIO is enabled.
+
+It is intentionally a view export, not a source-preserving rewrite. The saved
+image is written as an oriented RGBA result and may differ in channel count and
+numeric type from the original source image.
 
 `Save Selection As...` currently exports:
 
@@ -175,8 +194,12 @@ It does not yet bake the full per-view recipe. In particular, exposure, gamma,
 offset, channel/color display choices, and OCIO display/view state are still
 preview-only at export time.
 
-`Save Window As...` is also not yet a full per-view export. It still behaves
-like a regular `Save As...` path rather than baking the active view recipe.
+`Export Selection As...` currently exports:
+
+* the selected pixel rectangle from the current image;
+* the image with its stored orientation baked to the saved output; and
+* the active view recipe for exposure, gamma, offset, channel/color display,
+  and OCIO display/view if OCIO is enabled.
 
 
 Viewing, navigation, and inspection

src/doc/notes.txt

@@ -7,7 +7,7 @@ x   Open ^O
     Open Recent
     Save ^S
     Save As...
-    Save Window As...
+    Export As...
     Save Selection As...
 x   Reload
 x   Close ^W

src/imiv/CMakeLists.txt

@@ -1431,6 +1431,57 @@ if (TARGET imiv
             LABELS "imiv;gui;imiv_export"
             TIMEOUT 180)
 
+    add_test (
+        NAME imiv_export_selection_regression
+        COMMAND
+            "${Python3_EXECUTABLE}"
+            "${CMAKE_CURRENT_SOURCE_DIR}/tools/imiv_export_selection_regression.py"
+            --bin "$<TARGET_FILE:imiv>"
+            --cwd "$<TARGET_FILE_DIR:imiv>"
+            ${_imiv_ctest_stable_ui_backend_args}
+            --oiiotool "$<TARGET_FILE:oiiotool>"
+            --idiff "$<TARGET_FILE:idiff>"
+            --env-script "${CMAKE_BINARY_DIR}/imiv_env.sh"
+            --out-dir "${CMAKE_BINARY_DIR}/imiv_captures/export_selection_regression")
+    set_tests_properties (
+        imiv_export_selection_regression PROPERTIES
+            LABELS "imiv;gui;imiv_export"
+            TIMEOUT 180)
+
+    add_test (
+        NAME imiv_save_window_regression
+        COMMAND
+            "${Python3_EXECUTABLE}"
+            "${CMAKE_CURRENT_SOURCE_DIR}/tools/imiv_save_window_regression.py"
+            --bin "$<TARGET_FILE:imiv>"
+            --cwd "$<TARGET_FILE_DIR:imiv>"
+            ${_imiv_ctest_stable_ui_backend_args}
+            --oiiotool "$<TARGET_FILE:oiiotool>"
+            --idiff "$<TARGET_FILE:idiff>"
+            --env-script "${CMAKE_BINARY_DIR}/imiv_env.sh"
+            --out-dir "${CMAKE_BINARY_DIR}/imiv_captures/save_window_regression")
+    set_tests_properties (
+        imiv_save_window_regression PROPERTIES
+            LABELS "imiv;gui;imiv_export"
+            TIMEOUT 180)
+
+    add_test (
+        NAME imiv_save_window_ocio_regression
+        COMMAND
+            "${Python3_EXECUTABLE}"
+            "${CMAKE_CURRENT_SOURCE_DIR}/tools/imiv_save_window_ocio_regression.py"
+            --bin "$<TARGET_FILE:imiv>"
+            --cwd "$<TARGET_FILE_DIR:imiv>"
+            ${_imiv_ctest_stable_ui_backend_args}
+            --oiiotool "$<TARGET_FILE:oiiotool>"
+            --idiff "$<TARGET_FILE:idiff>"
+            --env-script "${CMAKE_BINARY_DIR}/imiv_env.sh"
+            --out-dir "${CMAKE_BINARY_DIR}/imiv_captures/save_window_ocio_regression")
+    set_tests_properties (
+        imiv_save_window_ocio_regression PROPERTIES
+            LABELS "imiv;gui;imiv_export;imiv_ocio"
+            TIMEOUT 180)
+
     add_test (
         NAME imiv_rgb_input_regression
         COMMAND

src/imiv/README.md

@@ -163,6 +163,24 @@ Focused Save Selection export regression:
 ctest --test-dir build_u -V -R '^imiv_save_selection_regression$'
 ```
 
+Focused Export Selection As regression:
+
+```bash
+ctest --test-dir build_u -V -R '^imiv_export_selection_regression$'
+```
+
+Focused Export As regression:
+
+```bash
+ctest --test-dir build_u -V -R '^imiv_save_window_regression$'
+```
+
+Focused Export As OCIO regression:
+
+```bash
+ctest --test-dir build_u -V -R '^imiv_save_window_ocio_regression$'
+```
+
 Focused developer-menu regression:
 
 ```bash